Lecture 3, First Law 1-11-08

Lecture 3, First Law 1-11-08 - Sommerfeld on...

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Sommerfeld on Thermodynamics: Thermodynamics is a funny subject. •The first time you go through the subject, you don't understand it at all. •The second time you go through it, you think you understand it, except for one or two small points. •The third time you go through it, you know you don't understand it, but by that time you are so used to the subject that it doesn't bother you any more.
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ADDITIONS TO WEB PAGE http://www.chem.ucsb.edu/coursepages/ • QUIZZES FROM 2007 • EXAMS FROM 2007
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The First Law in History • Bessler perpetual motion wheel~1712 • Industrial revolution begins ~ 1760 • Watt steam engine ~ 1770 • Lavoisier conservation of mass ~ 1785 • Dalton Atomic Theory of Matter ~ 1808 Statements of first law ~ 1850 • Gas Kinetic Theory ~ 1860 • Beginnings of quantum theory ~ 1900 • Theory of special relativity ~ 1905
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Julius Mayer History of the First Law German Physician, Dutch Ship Surgeon, East Indies, 1840 Color of blood from veins Blood drawn from vein of sailors much brighter red in East Indies than Europe Why?
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Heme Group Found Bonded to Proteins
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Effect of oxygen on heme iron Deoxyhemoblobin C N O = = = Plane of heme Distal His (E7) Fe Pro xima l His (F8) F7 F6 FG 1 FG2 FG 3 N C Oxygen not bonded Fe not in porphyrin plane
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Effect of oxygen on heme iron Oxyhemoglobin Fe Proxima l His (F8) F7 F6 FG 1 FG 2 FG 3 N C Distal His (E7) Oxygen bonds to Iron Fe pulled into plane of porphyrin C N O = = = Plane of Heme
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Conformational Changes between the T and R States of Hemoglobin
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Mayer’s Reasoning • Sailors in hot climates use little oxygen to generate body heat – red blood • Sailors in cold climates use lots of oxygen to generate body heat – blue blood • Work must be done in both climates • HMMMMMMMMMMmmmmmm……… • .......................................................
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This note was uploaded on 08/06/2008 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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Lecture 3, First Law 1-11-08 - Sommerfeld on...

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